The mass-energy equivalence formula is an example of the law of the conservation of ________

Suppose you are standing on the center of a merry-go-round that is at rest. You are holding a spinning bicycle wheel over your h

ioda

Answer:

B. It begins to rotate counterclockwise

Explanation:

It can happen that the merry-go-round remains at rest in the case when the person is standing on the axle of the merry go round whose axis is fixed to some rigid support, but here the person is standing at the center of the merry-go-round not at the axle hence the according to the conservation of angular momentum. Angular momentum is given as:

$L=I.\omega$

for the conservation of momentum

$I.\omega=I'.\omega'$

where:

$I=$ moment of inertia of the merry-go-round

$\omega=$ angular velocity of the merry-go-round

$I'=$ moment of inertia of the bicycle wheel

$\omega'=$ angular velocity of the wheel

As the person tries to stop the wheel which is rotating then the person feels an opposing force which tries to moves the whole system in its direction.

6 0

3 years ago

Why do electrical devices have resistance

Kamila [148]

As electrons move through the conductor, some collide with atoms, other electrons, or impurities in the metal.

8 0

3 years ago

A motorboat travels 92 km in 2 hours going upstream. It travels 132 km going downstream in the same amount of time. What is the

taurus [48]

Answer:

The speed on boat in still water is $56 \frac{km}{h}$ and the rate of the current is $10 \frac{km}{h}$